摘要
为了研究电池部件对电动自行车平顺性的影响,选取全悬架电动自行车为研究对象。将电池作为独立刚体建立电动自行车6自由度的动力学模型,采用滤波白噪声作为路面输入模型,运用Matlab/Simulink软件对电动自行车的平顺性进行了仿真。结果表明,电池后置安装对人体平顺性评价较好,而电池前置对车架的垂直、俯仰加速度抑制较好。在电池前置安装时,不仅影响车架垂直、俯仰振动加速度功率谱密度的幅值,而且影响其频率结构,而电池后置时仅影响其幅值。同时,电池质量和电池安装刚度也影响其平顺性。
For the sake of studying the influence of battery component on the riding-comfort of electric bicycle, the full suspension framed electric bicycle was selected as the object of research. Let the battery be regarded as an independent rigid body to establish the 6 DOF dynamics model of electric bicycle. Taking the adopted filtering white noise as the inputting model of rod surface and utilizing the Matlab/Simulink software to carrying out simulation on the ride-comfort of the electric bicycle. The results showed that the rear mounted battery made a better evaluation on ride-comfort for human body, yet the front mounted battery made a better restrain on the vertical, pitching acceleration of bicycle frame. While the battery was mounted at the front, it affects not only the acceleration power spectrum amplitude value of vertical, pitching vibration of bicycle frame but also affects its frequency structure, and yet only its amplitude value was affected while the battery was mounted in the rear. At the same time, the battery quality and its mounting rigidity would affect its ride-comfort as well.
出处
《机械设计》
CSCD
北大核心
2009年第5期21-24,共4页
Journal of Machine Design
基金
天津市科技计划资助项目(07JCZDJC09200)
关键词
电动自行车
平顺性
电池
6自由度
electric bicycle
riding-comfort
battery
6 degree of freedom
